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E-Mobile System을 이용한 국립공원 관리시스템 설계
오세진,안상렬,변희섭,마호섭 경상대학교 농과대학 부속연습림 2001 演習林硏究報告 Vol.- No.11
In this paper, we developed a design model for integral administration of national parks using E-Mobile system, which combined Geographical Information System(GIS) and Geographical Positioning System()GPS . This E-Mobile system will contribute to the systematic administration in the national parks by recording geographical information of the national parks by GIS, as well as an individual route guide within the parks by GPS with satellites. Finally, this paper will considerably contribute to the systematic and integral organization of the national parks organization by the newly developed E-Mobile system.
안삼근,강형철,안상열,이균필,변희섭 경상대학교 농업생명과학연구원 2002 농업생명과학연구 Vol.36 No.4
본 연구는 집성 염색 무니목 개발을 위하여 사용 가능한 수종과 3종류의 염료를 사용하여 염색시간, 염색온도, 함수율 및 Flitch 제작에 대하여 연구한 결과는 다음과 같다. 실험에 사용한 4수종 중에서 선삭성이 불량한 은수원 사시나무를 제외한 3수종인 소나무와 이태리 포플러, 마티카가 사용 가능한 수종으로 밝혀졌다. Stain은 번지거나 얼룩이 지는 현상, Dylon은 침투 불균일로 부적당하였으나 Fine은 염색상태가 양호하였다. 염색시간은 5시간 이상 되어야 염색정도가 양호하였고, 염색온도는 90℃에서 가장 적당하였으며 생재와 기건재 및 포수재에 대한 영향은 큰 차이가 없었다. Flitch제작에 적당한 함수율은 9%이었다. This study was carried out to develop laminated dyeing wood, for which usable three sixties of trees and 3 kinds of dye stuffs were used to investigate dyeing time, dyeing temperature, moisture content and manufacture of flitch, the results were as follows: Out of four species of trees used in the experiment, it was found that three species, Pinus densiflora, Populus euramercana and Dyrea costulata were usable excluding Populus tomentiglandulosa whose cutting ability was bad. As to influence according to the kind of dye stuff, the Stain of low price could be used as a coloring agent but it was not proper as a dyeing agent due to spreading or staining phenomenon. As Dylon which was generally used to dye textile penetrated them uneven, dyeing only their surface, it was also found improper to be used. On the other hand, the dyed condition was good with Fine. The dyed condition was good when dyeing time was more than 5 hours and it was the most adequate when the temperature was at 90℃. There was no significant difference between their influence on green, dried and saturated wood.-In the manufacture of Flitch, the most appropriate moisture content was 9%.
Hee Seop Byeon,Jae Min Kim,Kyung Rok Won,Seung Won Oh 한국목재공학회 2011 목재공학 Vol.39 No.5
Nondestructive evaluation (NDE) technique method using a resonance frequency mode was carried out for woodceramics made by different phenol resin impregnation ratios (40, 50, 60, 70%) for Broussonetia Kazinoki Sieb. Dynamic modulus of elasticity increased with increasing resin impregnation ratios. There was a close relationship between dynamic modulus of elasticity and static bending modulus of elasticity and between dynamic modulus of elasticity and MOR and between static bending modulus of elasticity and MOR. Therefore, the dynamic modulus of elasticity using resonance frequency mode is useful as a nondestructive evaluation method for predicting the MOR of woodceramics made by different impregnation ratios.
Hee Seop Byeon,Kyung Rok Won,Seung Won Oh 한국목재공학회 2014 목재공학 Vol.42 No.2
Nondestructive evaluation (NDE) method by using a resonance frequency mode was carried out for ceramics made from particle boards with different phenol resin impregnation ratios (30, 40, 50, 60%) at carbonizing temperature of 800℃. The material for ceramics was Miscanthus sinensis var. purpurascens board. Dynamic modulus of elasticity in-creased with increasing impregnation ratio. There was a close relationship of dynamic modulus of elasticity and static bending modulus of elasticity to modulus of rupture (MOR). However, the result indicated that correlation coefficient is higher in dynamic modulus of elasticity to MOR than that in static modulus of elasticity to MOR. Therefore, the dynamic modulus of elasticity using resonance frequency by free vibration mode is more useful as a nondestructive evaluation method for predicting the MOR of ceramics made from Miscanthus sinensis var. purpurascens particle boards by different phenol resin impregnation ratios.
변희섭 ( Hee Seop Byeon ),황교길 ( Kyo Kil Hwang ),이동환 ( Dong Hwan Lee ),황정우 ( Jung Woo Hwang ),오승원 ( Seung Won Oh ) 경상대학교 농업생명과학연구원(구 경상대학교 농업자원이용연구소) 2010 농업생명과학연구 Vol.44 No.4
인피섬유로 한지를 제조하고 남은 닥나무 목질부를 고부가치화 하기 위하여 닥나무 목질부로 제조된 파티클보드를 이용하여 탄화온도 변화에 따른 닥나무재료 우드세라믹을 제조하여 물성을 검토하였다. 밀도, 휨강도성능, 브리넬 경도, 압축강도 등은 탄화온도가 증가할수록 증가하였으며 밀도와 휨강도성능, 경도, 압축강도사이에는 유의성이 인정되는 밀접한 상관관계를 나타내었다. This study was carried out to investigate the properties of woodceramics made from woody part of Broussonetia Kazinoki at different carbonizing temperatures of 600℃, 800℃, 1000℃ and 1200℃. The physical and mechanical properties increased with increasing carbonizing temperature. The highest mean values of density, bending strength, Brinell hardness and compressive strength were 0.62g/cm3, 79 kgf/cm2, 203kgf/cm2 and 129kgf/cm2, respectively. There were close correlations between density and bending strength, Brinell hardness and compressive strength and MOE and MOR.
변희섭 ( Hee Seop Byeon ),김재민 ( Jae Min Kim ),황교길 ( Kyo Kil Hwang ),박성철 ( Seong Cheol Park ),오승원 ( Seung Won Oh ) 한국목재공학회 2010 목재공학 Vol.38 No.3
This study was carried out to investigate the properties of woodceramics made from woody part of Broussonetia Kazinoki at different impregnation ratios of phenolic resin of 40, 50, 60, 70%. The physical and mechanical properties increased with increasing impregnation ratio. The highest mean values of density, bending strength, Brinell hardness and compressive strength were 0.66 g/cm3, 53 kgf/cm2, 187 kgf/cm2, 126 kgf/cm2, respectively. There were close correlations between density and bending strength, Brinell hardness and compressive strength, and between MOE and MOR.